PWSID
WA5366637
State
Washington
City
Tacoma
Population served
7,401
Primary source
Groundwater
Score history
▼ 20 points — the score moved from 100 to 80 on Jun 18, 2026, as newly published EPA data was incorporated.
2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.
PFAS & contaminant readings
Latest detections from EPA’s UCMR5 monitoring (through Oct 2024). Levels in parts per trillion (ppt).
PFHxS
Perfluorohexanesulfonic acid
15 ppt
limit 10 ppt
PFPeA
26 ppt
limit —
PFHxA
19 ppt
limit —
PFBS
16 ppt
limit —
PFPeS
8.1 ppt
limit —
PFBA
6.3 ppt
limit —
PFHpA
3.5 ppt
limit —
Violations & enforcement
No violations are on record for this system in EPA’s SDWIS/ECHO data.
This profile is built from EPA public records for system WA5366637 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.